[mutter] (5 commits) Non-fast-forward update to branch tintou/clutter-actor-nullable

[Marge Bot <marge-bot src gnome org>]

The branch 'tintou/clutter-actor-nullable' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  a2ebc52... clutter/actor: Add missing nullable annotations

Commits added to the branch:

  2c70120... surface-actor-wayland: Do not acquire scanout if actor appe (*)
  e82685d... crtc/native: Add API to check whether the CRTC supports har (*)
  00c329a... cursor-renderer/native: Use MetaCrtcNative API to check cap (*)
  5ca43e7... renderer/native: Set EGLContext when creating secondary GPU (*)
  62ab4c0... clutter/actor: Add missing nullable annotations

(*) This commit already existed in another branch; no separate mail sent